PHOTOSYNTHESIS

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• Trees purify the air for us, by 'breathing' which is absorbing carbon dioxide and then producing oxygen. This is called photosynthesis. A single tree can absorb 10 pounds of air pollutants a year, and produce nearly 260 pounds of oxygen- enough to support two people. Trees also clean our atmosphere by absorbing airborne particles, and by absorbing ozone, carbon monoxide, sulphur dioxide, and other greenhouse gases.

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• So without trees we wouldn't be able to live. Because they clean/purify our atmosphere. Photosynthesis: the process in which green plants use energy from the sun to transform water, carbon dioxide, and minerals into oxygen and organic compounds.